[PATCH 3 of 5 V4] templates-default: factor out definition of changeset labels

[Denis Laxalde]

# HG changeset patch
# User Denis Laxalde <denis.laxalde at logilab.fr>
# Date 1483446329 -3600
#      Tue Jan 03 13:25:29 2017 +0100
# Node ID 412f8e24f48c8f7006f826a3eeb41f9521c53e4f
# Parent  7a01933ed8be3b286a0bbd666d46e7de3efa2d67
# EXP-Topic evolve-ui
templates-default: factor out definition of changeset labels

This is redundant for normal and debug mode and prepares extension of this
list that should effect both modes.

diff --git a/mercurial/templates/map-cmdline.default b/mercurial/templates/map-cmdline.default
--- a/mercurial/templates/map-cmdline.default
+++ b/mercurial/templates/map-cmdline.default
@@ -28,13 +28,14 @@ lfile_copies_switch = '{if(file_copies_s
                                                % ' {name} ({source})'}\n"))}'
 
 # General templates
-cset = '{label("log.changeset changeset.{phase}",
+_cset_labels = 'log.changeset changeset.{phase}'
+cset = '{label("{_cset_labels}",
                "changeset:   {rev}:{node|short}")}\n'
 
 lphase = '{label("log.phase",
                  "phase:       {phase}")}\n'
 
-fullcset = '{label("log.changeset changeset.{phase}",
+fullcset = '{label("{_cset_labels}",
                    "changeset:   {rev}:{node}")}\n'
 
 parent = '{label("log.parent changeset.{phase}",